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A 2 Sheets-Sheet 1. A. MAUL. A

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LOCK.

No. 532,573. Patent-ed Jan. 15, 1895.

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2 Sheets-Sheet 2. A. MAUL.

LOCK.

Patented Jan. 15, 1895.

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N rra Titres ANTON MAUL, OF NEWARK, NEW JERSEY.

LOCK.

SPECIFICATIONvforming part of Letters Patent No. 532,573, dated January 15,1 895. v Application led May 29, 1894. Serial No. 512,871. V(No model.)

To all whom, 1in/my concern.-

Be it 'known that I, ANTON MAUL, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, 5 have invented certain new and useful Improvements in Locks.; andl do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains rc to make and use the same, reference being had to the accompanying drawings,'and to letters of reference markedthereon, which form a part of this specification.

This invention relates to improvements in t 5 locks, and is designed to provide va lock having two locking bolts, arranged to slide side by side, orupon each other, and two sets of tumbler mechanism, each set co-operating with a locking bolt, said mechanism being zo operated by 'different keys, inserted in one key-hole in the lock casing.

My novel form of lock is especially designed to be used in connection with safety deposit boxes, where the banker holds one f 2 5 key and the depositor the other key, but it is applicable to many other uses, as on trunks and on tool or lother similar chests.

The invention is illustrated in the accompanying sheetsv ofdrawings, in which'- Figure l-is a front View of the lock, showing the arrangement ot' the two independently operated locking bolts and one key hole in the casing.- Fig. 2 is a sectional view of the lock, clearly illustrating one arrangement of 3 5 two sliding bolts and independent tumbler mechanism for operating said bolts by means of different keys, inserted in the same keyhole. Fig. 3'is a vertical section, taken on lined-3 in Fig. 2. Fig. 4 is an end-view of 4.o Athe bolt; and Fig. 5 is a horizontal section, on line 5-5 in said Fig. 2. Figs. 6 and 7 are views of two keys adapted to be used in connection with the construction of lock illustrated in said Fig. 2. Figs. 8 and 9 are a front 4 5 View and a cross-section respectively, of a lock embodying the principles of my invention, in which the locking bolts slide one upon the i other, each being adapted to be operated by i a different key. Fig.'10 is a vertical section 5o of said lock, taken on line 10-10 in Fig. 9.

Fig. 11 is an end view of the same, and Fig. 12 is a horizontal section, on line 12-12 in said Fig. 9. Figs. 13 and 14 are a front View and a cross-section respectively of alock embodying the principles ot' my invention, in

in the manner embodying the principles of,

my invention. Fig. 2O is an end view of the lock. Fig. 21 is a horizontal section, taken on line 21-21 in said Fig. 19. Fig. 22 is a similar section on line 22--22 Fig. 19, and Fig. 23 is a vertical section online 23--23 in said Fig. 2l.

Similar letters of reference are employed in each of the above described views to. indicate corresponding parts.

In said drawings, A represents the lock case which is provided with the usual backplate b having screw-'holes b therein for securing the lock to a door orndrawer. Secured to said plate b by means of suitable screws o. or iiran other well-known manner is the case plate a' provided with a key-hole a2 into which projects a stud or post b2 on which the key is placed and may be turned thereon in the usual manner.

As has been stated, I use in connection with my lock construction, two sliding bolts c and c', arranged side by side, as clearly shown in Figs. 2 and 4, said bolts c. and c being respectively provided with the holding orglocking pieces c2 and c3,-which extend normally into an opening b4 in the turned-over portion b3 of said back-.plate b, and maybe shot out to extend from said opening by the independent aotion'of two 'keys on the tumbler mech anism in the lock-casing.

As shown more especially in Fig. 2, the means for operating the bolt c consists of a spring-actuatedtumbler mechanism E, which retains the bolt in place until the tumblers e, e and c2, which engage with a stop or projection c5 on said bolt c, as shown, are released from'said stop by means of the tongue d2 of the key d, illustrated in Fig. 6, whereby, when said key is turned in the direction of arrow w, see Fig. 1, the tongue d2 enters a recess c4 in said bolt, and while throwing the tumblers e, e and e2 out of their locked engagement with the stop or projection c5, at the same time pushes the nosing c2 from the opening b4, as will be seen from Fig. 2. The key d is then Withdrawn from the key-hole and asecond key d', see Fig. 7, is placed on the post or stud b2. When this key d is turned in the direction of arrow 0o', see Fig. 1, then its tongue d3 enters a recess c6 in the bolt c'. At the same time said tongue causes the disengagement of a second set of tumblers c3, e4, c5, and e, with a stop or projection c7 on said bolt c', and the nosing' c3 of said bolt can be pushed from the opening b4, as will be understood. The tumblers e, e', and c2 are pivoted on a post f, and springs g cause the normal locked engagement of said tumblers with the stop or projection c5 on the bolt c.

The tumblers e3, e4, e5, and e are pivoted on a postf and springs g cause the normal locked engagement of said tumblers with the stop or projection c7 on the bolt c. Thus it will be seen, that I have devised a lock in which a person may use but one keyto operate a certain part of the mechanism, or two keys may be used, as a double safety. The essential feature of my invention therefore-is, vthe arrangement ot two independently operating sliding or locking bolts used in connection with any suitable form and construction of tumbler mechanism, worked by two difterent keys to be inserted into the same keyhole and upon the same post or stud b2, as stated. Said bolts c and c are provided with the slots c8 and c9 respectively, to permit the reciprocatory movement of said bolts on the postsfand f.

In lieu of the construction and arrangement of the parts illustrated in Figs. 1 to 5 inclusive, the bolts c and c may be arranged to slide one upon the other, instead of side by side. In this construction, as will be seen more especially from Figs. 9, 10 and l2, I use but one post f2, and while the nose-portions of the bolts are made to slide intimately one upon the other, still I arrange on said post f2 and between the two bolts, a tumbler e7 which is norlmally in locked engagement with the stop or projection c5 on the bolt c, while the tumblerse8 and ci are inuiorinal locked engagement with the stud or projection c7 on the second bolt c. Ot' course, the operation of the two keys is similar to that described in connection with Fig. 2, dsc., one key being used to release the tumbler e7 and operating the bolt c, and a second key being employed to release the tumblers es and e9 and operating the bolt c. To perfectly guide the bolt c', said bolt c is provided with two oppositely arranged projections or guides 010 between which the nosing c3 of the bolt c can be made to slide, as will be clearly understood from an inspection of Figs. 9 and 11. In Figs. 13 to 17 inclusive, I have illustrated still another manner of arranging the parts of the lock. In this construction the bolts c and c slide one upon the other, and the tumbler mechanism is arranged in precisely the same manner as that illustrated in said Figs. 9, 10 and 12. In this construction, however, the bolt c mustbe operated before the second bolt c can be shot from the opening b4 of the lock. As will be seen from Figs. 14 and 15, said bolt c is provided with a projection c11 which forms a stop and also a guide for the bolt c when the latter is operated. Said bolt c is provided with a slot cl2, the surrounding edges of which embrace said projection c, as will be clearly seen from Fig. 14.. From an inspection of said figure, it, will be evident, that the edge cl3 on said projection c11 prevents the sliding movement of the locking bolt c', unless the bolt c has first been operated. AThus it will be seen, that the difference in operation between the form of lock illustrated in Figs. 13 to 17 inclusive, and the lock shown in said Figs. 1 to 12 inclusive, so far as the operations of the keys are concerned, is, that in the lock illustrated in Figs. 13 to 17, the bolt c must first be operated before the bolt c can be Worked, while in the two other constructions either bolt c or c can be operated first.

In Figs. 1S to 23 inclusive, I have shown a form of hasp lock for trunks or boxes, the construction of lock still embodying the principles of my invention. In said figures, h, indicates the hasp-plate provided with hasps h', which enter into the openings b5 in the portion b3 of the plate b. In this construction the bolt c is `provided with suitable holding tongues c1 which may be made to enter the hasps, see Fig. 19, and the bolt c is provided with holding tongues 015, as will be seen from Fig. 23. Said bolts c and c are arranged on opposite sidesjot a suitable separating plate il and the stud c5 on said bolt c projects through an opening in said plate and a slot in the bolt c and engages with a tumbler ew. The bolt c is provided with the stud c7 which engages with the tumbler all. Said bolts c and c are respectively provided with the recesses c4 and c, whereby the tumbler mechanism and the bolts can be operated by two different keys in the manner of the lock construction, illustrated in Figs. l, 2, dsc., and the holding portions of said bolts can be shot into the hasps 7L on said hasp-plate 7L from opposite sides.

0f course it will be evident that many changes in the arrangement and construction ofthe parts of the lock may be made without departing from the scope oi' my present invention, and I therefore do not wish to be understood as limiting myself to the exact forms of construction herein shown.

The essential feature of my invention is the combination, with any form of boltoperating mechanism, of two independentlyslid ing bolts Yarranged side by side, or upon one IOO another, and operated by two dierent keys, which are inserted into the same key-hole in the look casing. f

Having thus described my invention, what I claim is 1. In a look, the combination, with the look casing having an opening b4 and a key-hole, of a pair of looking bolts being in sliding oontaet and the noses extending into said opening b4, said bolts being operated by dierentkeys, and two sets of tumbler mechanism in said casing, each set (3o-operating with a bolt and being operated independently by the lfieyslil, substantially as and for the purposes set ort 2.V In a look, the combination, with a look casing having an opening b4. and a key-hole,

ANTON MAUL. Y

Witnesseszv FREDK. C. FRAENTZEL, WM. H. CAMFIELD, Jr. 

